Ground



J. E. ROSENFELD.

v GROUND. APPLICATION FILED JUNE 14, 1919.

1,388,435. Patented Aug. 23, 1921.

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JOSEPH E. ROSENFELD, OF COUNCIL BLUFFS, IOWA.

GROUND.

Specification of Letters Patent.

Patented Aug. 2 3, 1921.

Application filed June 14, 1919. Serial No. 304,351.

To all whom it may concern:

Be it known that I, JosnrH E. Rosnnnnno, a citizen of the United States, and a resident of the city of Council Bluffs, county of Pottawattamie, State of Iowa, have invented a certain new and useful Improvement in Grounds, of which the following is a specification.

This invention relates to grounds, and has for an object to provide an article of manufacture of improved construction for attaching to walls, or the like, of various constructions, and to which may be secured by means of nailing or otherwise, floors, trim, plumbing or lighting fixtures, or any other materials or articles ordinarily nailed or secured to a wall or floor.

An object of the invention is to provide a plate having means for attaching the plate to a wall, floor foundation or the like, such plate having a continuous inclined flange extending entirely around an opening, and with a block having preferably inclined sides which engage against the inclination of the flange, whereby the penetrable block is held in position for receiving nails or the like, and to resist being withdrawn from the plate.

A further object of the invention is to provide in a ground a plate having an opening surrounded by a continuous inclined flange with a block inserted through the opening into engagement with the flange so that the block cannot be forced through without actually expanding the material of the flange, or contracting the material of the block.

With these and other objects in View the invention comprises certain novel features of construction, combination and arrangement of parts as will be hereinafter more fully described and claimed.

In the drawings Figures 1, 2 and 3 are views in front elevation of the ground forming the sub ectmatter of this invention, differing only in shapes of plate and penetrable block.

Fig. 4 is a view of the improved ground in side elevation, exhibiting either of the embodiments shown at Figs. 1, 2, or 3.

Fig. 5 is a transverse sectional view taken on line 5-5 of Figs. 1 or 3.

Fig. 6 is a transverse sectional view taken on line 66 of Fig. 2.

Like characters of reference designate cor responding parts through the several views.

The improved ground which forms the subject-matter of this application comprises a plate 10 which, under ordinary conditions, Wlll be of metal, although it is to be understood that the lnvention is not limited to such material. The plate may differ in shape as disclosed in the several figures, but Whatever the shape, it is provided with a plurality of perforations 11, the function scribed.

Preferably located centrally of the plate an opening is formed surrounded by a flange 12, or 12', differing only in the shape of the opening and formed as a continuous flange entirely around such opening and inclined inwardly. lVithin the opening a penetrable block 13 is employed, which under ordinary conditions will be made of wood, although it is to be understood that the invention is not limited to the use of such material. The block will also be preferably formed with a cylindrical portion shown at 14, and a tapered portion shown at 15, the cylindrical portion being of such size as to be forced under pressure through the opening of the flange and the tapered portion 15 to bear against the inclined walls of the flange 12. In the embodiment shown at Fig. 2, a bead 16 is formed about the periphery of the plate, although such bead is employed only for strengthening purposes and forms no part of the invention.

In operation, the ground may be attached to a frame wall by inserting nails or other driven or threaded fastenings through some of the openings 11, but is not ordinarily employed on such frame wall, but is usually employed upon impenetrable Walls, such as stone, brick, cement or the like. In such instances the ground is attached to the wall foundation by applying a plastic oementitious material to the wall and to the back of the ground, such cementitions material oozing through the openings 1.1 and about the edges of the plate, whereby when such cementitious material becomes set the ground is attached firmly to the impenetrable wall. The penetrable blocks 13 are employed in various lengths to correspond to the thickness of plaster or other finish to be applied, it being intended that the plaster of the wall when finally applied shall be flush with the end of the penetrable block 13, although it is obvious that such grounds may be applied in other ways and for other l of which will be hereinafter more fully depurposes. As for instance, when the ground is to be employed to attach a fioor to a cement foundation, it is obvious that no plaster will surround the block although under some conditions the plate may be set into the cement with the end of the penetrable block 7 flush with the surface of the cement. There is no limit in'the presentinvention in the firmly and securely retains the trims orfix- 'tures in the desired position.

Havingthus described my invention, what I claim is: r

1. A ground comprising'a plate having an set in position, it is employed by' nails 7 or other fastening members throug whatever trim or fixturesare to be. applied into the penetrable' block 13 which engaged by said flange vform diameter pro ecting outside of said opening, a penetrable block disposed within said opening, said block being of uniform diameter for a portion of its thickness and having an inclined surface, and a continuous, angular inwardly inclined flan on the plate extending co-extensively with the inclined surface on the block and adapted to overlie the inclinedsnrface on the block and retain said block in the opening.

2. A ground com rising a perforated plate having a centre opening, a block disposed within said opening,,a continuous, inwardly roject' inclined flange on said 'plate, said block aving an inclined portion extending co-extensively with the flange and and a portion of unined at the city of New York, county of New ork and State of New York this 23rd day, of May, 1919.

JOSEPH E. ROSENFELD. 

